Gas furnace



July 9,1940. H BECKER 2,207,474

GAS FURNACE Filed March 3l, 1939 K l /da /5 X wmwm Patented July 9, 1940UNITED STATES GAS FURNACE Heinz Becker, Hamburg, Germany ApplicationMarch 31, 1939, Serial No. 265,320 In Germany March 31, 1938 6 Claims.

This invention relates to a gas furnace for smoke producing devices,curing apparatus, etc.

In a known gas furnace of this class the burner tube for the furnace isprovided with gas outlet openings, arranged at a distance above a gratereceiving the smoke producing material and covered with a protective capwhich is movably arranged on a rotatable shaft to permit its removalfrom the burner tube if required.

This known gas furnace is open to the objection that it comprises aplurality of independent parts whereby its installation is rendereddifficult.

It is the object of the invention to overcome this drawback and toprovide a gas furnacel for smoke producing devices, curing apparatus,etc., which owing to the omission of loose or mechanically movable partsis of simplified construction so that the furnace can be readilyinstalled or removed. I

The invention attains its object by combining the burner tube and theprotective cap arranged above it into a unitary structure in the baseportion of which perforations for the supply of air are provided, theentire structure resembling a grate bar.

In further accordance with the invention the burner tube is positionedbetween the grate bars which receive the smoke producing fuel and is ona level with the lower edge of vthese bars.

One form of the invention is illustrated in the accompanying drawing, inWhich- Figure 1 is a crcss section of those portions of a gas furnacewith which the invention is conccrncd and Fig. 2 a side view, partly insection, of Fig. 1.

In the construction shown the gas passage 3 is arranged within a body 3aresembling a grate baiand provided with gas outlet openings 4 and thcupwardly directed air passages i6. The gas outlet openings 4 are coveredby lateral rooflike extensions Il of the body member- 3a to prevent fuelfrom directly contacting with the openings 4.

Laterally of the body member 3a the individual grate bars 2 are arrangedin the usual manner.

By constructing the gas furnace in the manner.

described the installation of special gas pipes as well as theirprotective covering and the provision of means for lifting them can bedispensed with, as according to the invention all these essential partsof the furnace are combined into a single member having the shape of agrate bar.

I claim:

1. A burner tube for smoke producing devices consisting of an elongatedbody portion having a chamber extending longitudinally thereof,longitudinal flanges extending laterally from each side of the lowerpart of the body, said body hav- .ing a series of longitudinally spacedgasescape openings at each side of the body and leading from saidchamber, said flanges being provided with air passages therethrough andpositioned to have the air issuing from the passages intersect the gasstreams from said openings, and imperforate flanges extending from thesides of the body at the upper part thereof.

mentioned flanges project laterally beyond the first mentioned flanges.

. 3. The burner of claim 1 wherein the gas escape openings and secondmentioned flanges are both inclined downwardly in a direction away fromthe chamber.

4. The burner of claim 1 wherein the gas escape openings are inclineddownwardly and the air openings inclined upwardly in directions awayfromthe central vertical plane of the body.

5. The burner of claim 1 wherein the gas escape openings are inclineddownwardly and the air openings inclined upwardly in directions awayfrom the central vertical plane of the body, and

' the second mentioned flanges are inclined downwardly from said planeand project laterally beyond the first mentioned flanges.

6. The burner of claim 1 wherein the first mentioned flanges extenddownwardly at their free edges to form supporting legs having an airchannel therebetween from which extends the air openings.

HEINZ BECKER.

2. The burner of claim 1 wherein the second -L

